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Windows 7: Windows files broken after a series of unsolicited shutdowns

Here are some instructions to make life easier 1) To open an Elevated Command Prompt Window (the ECP window), click on Start, All Programs, Accessories – then right-click on Command Prompt, and select Run as Administrator. Accept the UAC prompt. 2) To run the commands easier, highlight the block of commands, and right-click on the highlight – select Copy. In the CP Window, click on the black/white icon at top left – select Paste. The commands will run but may not complete the last command, so hit the Enter Key once. 3) To copy the results... click on the Black/White icon in the top left, and select Edit... 'Select All', and hit the Enter key - then use Ctrl+V or r-click+Paste to paste it into your response.

PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB on the Lenovo Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE11/Chrome/FF(if I must)

Here are some instructions to make life easier 1) To open an Elevated Command Prompt Window (the ECP window), click on Start, All Programs, Accessories – then right-click on Command Prompt, and select Run as Administrator. Accept the UAC prompt. 2) To run the commands easier, highlight the block of commands, and right-click on the highlight – select Copy. In the CP Window, click on the black/white icon at top left – select Paste. The commands will run but may not complete the last command, so hit the Enter Key once. 3) To copy the results... click on the Black/White icon in the top left, and select Edit... 'Select All', and hit the Enter key - then use Ctrl+V or r-click+Paste to paste it into your response.

As the explorer.exe did not start at all, there won't be any start button though
Can run via task manager, though. File > New Task (Run...) > type "cmd" (without quotes) then hit Enter/click OK

PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB on the Lenovo Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE11/Chrome/FF(if I must)

EDIT: However, thinking again about it, I suspect the exercise might not reveal a lot since given that these entries are global and that they obviously DO work well for the secondary account (otherwise I could not work with it), the issue of the explorer.exe failing to load (or to remain loaded) within the secondary account might not have to do with these global entries.

The first indicates some kind of problem on shutdown (I'll have to research that)
The two names don't normally exist in a system unless it's connected to a Domain server, so far as I know - is this the case here?

PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB on the Lenovo Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE11/Chrome/FF(if I must)

EDIT: However, thinking again about it, I suspect the exercise might not reveal a lot since given that these entries are global and that they obviously DO work well for the secondary account (otherwise I could not work with it), the issue of the explorer.exe failing to load (or to remain loaded) within the secondary account might not have to do with these global entries.

can you open Event Viewer from the primary account?
from task manager File > New Task (Run...) > eventvwr > enter/ok
go to Windows Logs > Application, and see if there is any error log regarding explorer.exe
it might help to narrow down the problem scope

also, can you do REG QUERY "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" just like Noel asked before?
this time, in the primary account.
this will bring up list of program that will be automatically run when the user log in. One of them might be causing the explorer.exe to crash...

PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB on the Lenovo Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE11/Chrome/FF(if I must)

PSU n/a Hard Drives 750GB Seagate internal
Sundry external drives attached to other computers on the local network
1TB on the Lenovo Internet Speed as much as I can get - usually on a dongle, so <1Mb/s Antivirus MSE Browser IE11/Chrome/FF(if I must)

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